that is the Voortrekker Monument, in Pretoria, South Africa, and was inaugurated on 16 December 1949 to commemorate the Great Trek and the VoortrekkersThe trekkers were those who, in wagons pretty much like those used to move west in the USA, moved north from Cape Town and colonised South Africa

Many thanks for the super-fast response. Marvellous that I can find out about such an obscure subject [for someone in England] so quickly - power of the Internet! Thanks also for all the accompanying data.

I was completely wrong about the date though, so I'm pretty certain this was indeed a commemorative item dating to 1949. Going from the style I could have sworn mid-1930s: just goes to show... :oops: